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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kSharding
#include "mongo/platform/basic.h"
#include "mongo/db/auth/action_set.h"
#include "mongo/db/auth/action_type.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/auth/privilege.h"
#include "mongo/db/catalog_raii.h"
#include "mongo/db/commands.h"
#include "mongo/db/s/collection_sharding_runtime.h"
#include "mongo/db/s/sharding_state.h"
#include "mongo/s/grid.h"
#include "mongo/util/str.h"
namespace mongo {
namespace {
class GetShardVersion : public BasicCommand {
public:
GetShardVersion() : BasicCommand("getShardVersion") {}
std::string help() const override {
return " example: { getShardVersion : 'alleyinsider.foo' } ";
}
bool supportsWriteConcern(const BSONObj& cmd) const override {
return false;
}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kAlways;
}
bool adminOnly() const override {
return true;
}
Status checkAuthForCommand(Client* client,
const std::string& dbname,
const BSONObj& cmdObj) const override {
if (!AuthorizationSession::get(client)->isAuthorizedForActionsOnResource(
ResourcePattern::forExactNamespace(NamespaceString(parseNs(dbname, cmdObj))),
ActionType::getShardVersion)) {
return Status(ErrorCodes::Unauthorized, "Unauthorized");
}
return Status::OK();
}
std::string parseNs(const std::string& dbname, const BSONObj& cmdObj) const override {
return CommandHelpers::parseNsFullyQualified(cmdObj);
}
bool run(OperationContext* opCtx,
const std::string& dbname,
const BSONObj& cmdObj,
BSONObjBuilder& result) override {
const NamespaceString nss(parseNs(dbname, cmdObj));
uassertStatusOK(ShardingState::get(opCtx)->canAcceptShardedCommands());
result.append(
"configServer",
Grid::get(opCtx)->shardRegistry()->getConfigServerConnectionString().toString());
AutoGetCollection autoColl(opCtx, nss, MODE_IS, AutoGetCollectionViewMode::kViewsPermitted);
auto* const csr = CollectionShardingRuntime::get(opCtx, nss);
const auto optMetadata = csr->getCurrentMetadataIfKnown();
if (!optMetadata) {
result.append("global", "UNKNOWN");
if (cmdObj["fullMetadata"].trueValue()) {
result.append("metadata", BSONObj());
}
} else {
const auto& metadata = *optMetadata;
result.appendTimestamp("global", metadata.getShardVersion().toLong());
if (cmdObj["fullMetadata"].trueValue()) {
BSONObjBuilder metadataBuilder(result.subobjStart("metadata"));
if (metadata.isSharded()) {
metadata.toBSONBasic(metadataBuilder);
BSONArrayBuilder chunksArr(metadataBuilder.subarrayStart("chunks"));
metadata.toBSONChunks(&chunksArr);
chunksArr.doneFast();
}
metadataBuilder.doneFast();
}
}
return true;
}
} getShardVersionCmd;
} // namespace
} // namespace mongo
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